Matrix roaster



0. C. ROESEN MATRIX ROASTER Feb. 2, 1932.

Original Filed Sept. 2 1926 Patented Feb. 2, 1932 UNITED STATES PATENT OFFICE OSCARCHARLES ROESEN, OF BROOKLYN, NEW YORK, ASSIGNOR TO WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA MATRIX noasrm Application filed September 2, 1926, Serial a... 133,161. Renewed June 17, 1931.

This invention relates to a device for roasting stereotype printing plate matrices. The principal objects of the invention are to provide a machine which can operate continuously and in which the matrices can be introduced at one point and withdrawn at another, fully and uniformly dried and roasted; to provide a construction in which the speed of operation can be varied to subject the matrices section.

The devices which have been used heretofore for roasting stereotype matrices have been of the type to operate by hand and to roast the matrices individually, with no means for accomplishing any of the above men'- tioned results. The matrix is left in as long as the operator may judge necessary and the result is a wide range in the amount of moisture left in the matrix after roasting. Also the work is'done very-slowly and one of the operators has to attend to each matrix individually and has to wait for one to be entirely dried before starting another.

' In order to avoidthe delay and uncertainty, and to accomplish the results above mentioned, I provide a roaster in the form of a drum 10 mounted on a stationary vertical spindle 11 and rotatable about that spindle as an axis. as comprising a motor 12 having a driving wheel 14 which can be adjusted longitudinally along a driven disc 15, the surface of which it engages. Obviously the speed of rotation of the disc is controlled by the position of the wheel 14 and the speed of the machine is easily controlled. This wheel 15 is mounted on a shaft 16 which, by a worm 17 drives The method of rotation is shown tate with the drum and a hub 24 at the top of the spindle 11.

The drum is provided with a serles of curved walls forming pockets 25 between them of a shape corresponding with the curve of a matrix. These pockets or compartments are adapted to receive one matrix M each and hold it in curved position whlle being dried.

It'will be noted that the matrices M stand up on edge in the pockets. 25 and that these pockets are closed by end walls which constitute part of a cylinder. Each matrix 1s introduced into one of the pockets through a correspondingly curved slot 26 in the top '23 and removed therethrough after a rotation; The walls of the pockets 25 are provided with hand'holes'28 on both sides and the slots 26 are provided with similar hand holes 29 so that the'operative can introduce and remove the matrices conveniently by the fingers.

The gas burners may extend throughout substantially the entire bottom of the drum except where a space is needed for the motor or the wheel 15. It will be obvious that the speed of rotation having been fixed by proper adjustment of the wheel 14, rotation will be constant. Thus each matrix will be in the roaster the same length of time and thus be subjected to the same amount of heat.

In this way the roasting is uniform. A- few matrices can be tested to see if they are dry enough and then the adjustment made to secure the desired results, In this way a uniform product can be secured and oneoplarge number could under .the old conditions.

.Also only one machine-is required occupying only very little space to do the work of a large erative can handle as many matrices as a. I

number of the old form of matrix roasters.

The results above mentioned. are thus obtained. The matrices can not get out of shape and they are roasted uniformly.

Although I have illustrated and described only two forms of the invention, I am aware of the fact that modifications can be made therein by any person skilled in the art withv out departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described but what I do claim is 1. A matrix roaster comprising a drum rotatable on a vertical central axis and having a series of, curved pockets, each extending from a point near the center to a point near the circumference adapted to receive matrices therein standing on edge and to hold the matrices in curved formation, and means for applying heat to the bottom of the drum a it rotates.

2. In a matrix roaster, the combination with a drum having pockets therein arranged .to extend from a point near to the center to a point near the edge and rotatable on a cen tral axis, of means for applying heat to the drum to dry the matrices, said drum having a cover provided with slots adapted to register with each pocket, whereby matrices can be introduced and withdrawn.

3. In a matrix roaster, the combination with a drum having pockets therein on a vertical axis, of means for applying heat to the drum to dry the matrices, said drum having a cover provided with slots of the same shape as said pockets and registering with them, whereby matrices can be introduced to enter the pockets at one point and withdrawn at another after they have passed far enough around to be dried.

. 4. In a matrix roaster, the combination with a rotatable drum having curved pockets therein, said drum having a cover provided with slots of the same shape as said pockets and adapted to register with them, whereby matrices can be introduced to enter the pockets and withdrawn, said cover and pockets having hand holes to aid in introducing and removing the matrices by hand, of means for applying heat to the drum to dry the matrices uniformly.

In testimony whereof I have hereunto affixed my signature.

OSCAR CHARLES ROESEN. 

